IVY Classic 39058 8-Inch x 5/8 - 1/2-Inch Arbor, Carbon Steel Crimped Bench Wire Wheel - 0.012-Inch Coarse, 1/Card For removing rust, dirt, scale, paint or welds For edge-blending and weld preparation Tempered carbon steel bristles for long life Wire Diameter: Coarse 0.012-inch, Face Width: 5/8-inch Wheel Diameter: 8-inch, Arbor: 5/8 - 1/2-inch, Max RPM: 4,500